Bobbin



Jufly 31', 1923.

F. EDMANDS' BOBBIN Filed April 18. 1922 Patented July 31, 1923.

FRANK EDMANDS, OF HOPEDALE, MASSACHUSETTS, ASSIGNOR T BRAPER CC'BIPORA- LEliQN, OF HOPEDALE, MASSACHUSETTS, A CORPORATION EXAIHFFL BOBBIE.

application filed April 18, 1922. Serial No. 554,363.

To all whom it may concern:

Be it known that I, FRANK'EDMANDS, a resident of Hopedale, in the county of Worcester and State of Massachusetts, have invented an Improved Bobbin, of which the following is a specification.

The presentinvention is an improvement upon the bobbin shown in the United States Letters Patent of Hastings No. 9l2,5(i-l, February 16, 1909, and has reference to the way in which the metallic bushing is secured in place within the bobbin.

' The improvement is illustrated in the accompanying drawings, wherein- Figure 1 is a view of the bobbin with its base in section. the base of the bobbin in section and the bushing in elevation. Fig. 3 shows thebase of the bobbin and the bushing in longitudinal section in the plane indicated by the line 3- 3 in Fig. 2. Figs. 4 and 5 are crosssections. Fig. 6 is a perspective view of a portion of the periphery of the bushing.

The bobbin A, has an enlarged base B, re-

' cessed to receive the encircling rings C,

which are adapted to be engaged by holding jaws in a loom shuttle. The interior bore of the bobbin base receives the metal bushing 1). Near its outer lower end, the bore in the bobbin base has an inclined annular shoulder E. against which seats a correspondingly shaped outwardly projecting flange F, at the rear end of the bushing D. The bushing is driven into. place until the flange F, seats against the shoulder E, thereby insuring the proper longitudinal position of the bushing within the bobbin base. Likewise. the inner end of the bushing is bevelled at G, so as to seat against a correspondingly bevelled shoulder H, of the bobbin bore.

In order to tirmly hold the bushing in place so that it cannot be loosened, by. the pulling of the bobbin from a tightly fitting spindle. the outer peripheral surface of the bushing is so constructed as to securely .engage the interior surface of the bobbin bore.

' At the middle of the bushing there is a peripheral groove l. extending all the way "7 round the exterior of the bobbin, and there is a second outer peripheral groove J, adjoining the outer flange F. The exterior Fig. 2 is a view showing surface of the bushing between these two grooves, and the exterior surface of the bushmg between the groove I, and, the inner bevel G, are each equipped with a plurality of incisions K. The incisions extend around the bushing at frequent intervals so that larly to the length of the bushing. Each- 'there is a large number of incisions in each encircling row. Each incision extends anguincision is made by indenting the metal of the bushing (usually brass), the result being to produce along one edge a slight outward tained within the bobbin and does not come loose in withdrawing the bobbin from a tightly fitting spindle.-

I claim- 1.' A bobbin having a metallic bushing wlthln its bore, the bore of thebobbin havmg inner and outer inclined shoulders, and the bushing having a bevelled inner end and an outer inclined flange to fit said shoulders respectively, and the external periphery of the bushinghaving peripheral grooves and rows of angularly extending incisions, each incision having along one edge an outwardly projecting burr.

2. A bobbin having a metallic bushing within its bore, the external periphery of the bushing having peripheral grooves and rows of angularly extending incisions, each incision having a ong one edge an outwardly projecting burr. 1

3. A bobbin having a metallic bushing within its bore, the external periphery of the bushing having rows of angularly extendmg lnClSlOnS, each incision having along one edge an outwardly projecting burr.

In witness whereof, I have hereunto signed my name.

FRANK EDMANDS. 

